#include <stdio.h>

int func(int x)
{
    int sum = 0;
    for(int i = 0; i < x; i++)
        sum += i;
    return sum;
}








int main()
{
    int top = 100;
    int ret = 0;
    
    ret += func(top);
    printf("after:ret=%d\n", ret);
    return 0;
}
